Power Source Circuit

METER / GAUGE / DISPLAY: METER / GAUGE SYSTEM: Power Source Circuit

Power Source Circuit

DESCRIPTION

1. w/o Rear View Monitor System
(a) This circuit is the power source circuit for the accessory meter assembly. This circuit provides two types of power sources; one is a constant power source mainly used as a backup power source, and the other is a power source mainly used for signal transmission.
HINT: If the accessory meter assembly displays "1:00" when the ignition switch is turned off, then to ON again, the B terminal has a malfunction.
The maximum clock assembly margin of error is -4 to 4 seconds per day when the temperature is between -20°C (-4°F) and 60°C (140°F).

2. w/ Rear View Monitor System
(a) This circuit is the power source circuit for the accessory meter assembly. This circuit provides two types of power sources; one is a constant power source mainly used as a backup power source, and the other is a power source mainly used for signal transmission.
HINT: If the accessory meter assembly displays "1:00" when the ignition switch is turned off, then to ON again, the +B terminal has a malfunction.
The maximum clock assembly margin of error is -4 to 4 seconds per day when the temperature is between -20°C (-4°F) and 60°C (140°F).

WIRING DIAGRAM

1. w/o Rear View Monitor System





2. w/ Rear View Monitor System





INSPECTION PROCEDURE

PROCEDURE

1. CHECK HARNESS AND CONNECTOR
(a) w/o Rear View Monitor System





(1) Disconnect the F2 connector.
(2) Measure the voltage according to the value(s) in the table below.
Standard Voltage:





(3) Measure the resistance according to the value(s) in the table below.
Standard Resistance:





Text in Illustration





(b) w/ Rear View Monitor System





(1) Disconnect the F2 and F1 connectors.
(2) Measure the voltage according to the value(s) in the table below.
Standard Voltage:





(3) Measure the resistance according to the value(s) in the table below.
Standard Resistance:





Text in Illustration





Result:





C -- REPAIR OR REPLACE HARNESS OR CONNECTOR
B -- REPLACE ACCESSORY METER ASSEMBLY (w/ Rear View Monitor System)
A -- REPLACE ACCESSORY METER ASSEMBLY (w/o Rear View Monitor System)